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fix: NCD close UAF + conn name + init_connections per-link ni_tmp 

- ncd_down_cb: defer callback removal+close via uasync_call_soon to avoid
  UAF in etcp_cbk_fire iteration (removing ncd_up_cb corrupts saved next ptr)
- ncd_recv_control_handler: use deferred close for CLOSE handlers instead of
  direct etcp_connection_close to avoid nested etcp_cbk_fire UAF
- node_conn_direct_open/open_node: use ni->node_name if available for
  conn name, fallback to 'n_<node_id>' instead of NULL
- init_connections: build ni_tmp in link loop with only current link's addr,
  preventing NCD from creating links for ALL addrs on first socket
- utun_instance_reload: same per-link ni_tmp fix
- init_connections/reload: set ni_tmp.node_name = client->name for
  test find_client_link by name
topo_upd
evgeny 2 months ago
parent
4ba4ab038c
commit
8237d92be9
3 changed files with 201 additions and 224 deletions
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  1. 171
      src/transport_layer/etcp_connections.c
  2. 127
      src/transport_layer/node_conn_direct.c
  3. 105
      src/utun_instance.c

171
src/transport_layer/etcp_connections.c
Unescape View File

@ -18,6 +18,7 @@
#include "stcp_link.h"
#include "topo_node.h"
#include "topo_group.h"
#include "node_conn_direct.h"
#include "nat_detection.h"
#include "../lib/memory_pool.h"
#include "../lib/u_async.h"
@ -2200,137 +2201,73 @@ int init_connections(struct UTUN_INSTANCE* instance) {
}
}
// Initialize clients - create outgoing connections
// Initialize clients via node_conn_direct
struct CFG_CLIENT* client = config->clients;
DEBUG_DEBUG(DEBUG_CATEGORY_CONNECTION, "init_connections called, instance=%p, config=%p, clients=%p, total_conns=%d",
instance, config, config ? config->clients : NULL, instance ? queue_entry_count(instance->connections) : -1);
DEBUG_DEBUG(DEBUG_CATEGORY_CONNECTION, "init_connections: clients=%p total_conns=%d", config->clients, queue_entry_count(instance->connections));
while (client) {
// Check if client has required configuration
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "Client %s - keepalive=%d, links=%p, peer_key_len=%zu",
client->name, client->keepalive, client->links,
strlen(client->peer_public_key_hex));
// Create ETCP connection for this client
struct ETCP_CONN* etcp_conn = etcp_connection_create(instance, client->name);
if (!etcp_conn) {
DEBUG_ERROR(DEBUG_CATEGORY_CONNECTION, "Failed to create ETCP connection for client %s", client->name);
client = client->next;
continue;
if (strlen(client->peer_public_key_hex) == 0) {
DEBUG_WARN(DEBUG_CATEGORY_CONFIG, "no peer public key configured for client %s", client->name);
client = client->next; continue;
}
// Generate session_id for this client connection
if (random_bytes((uint8_t*)&etcp_conn->session_id, sizeof(etcp_conn->session_id)) != 0) {
DEBUG_ERROR(DEBUG_CATEGORY_CRYPTO, "Failed to generate session_id for client %s", client->name);
etcp_connection_close(etcp_conn);
client = client->next;
continue;
uint8_t pubkey_bin[SC_PUBKEY_SIZE];
if (sc_hex_to_binary(client->peer_public_key_hex, pubkey_bin, SC_PUBKEY_SIZE) != 0) {
DEBUG_ERROR(DEBUG_CATEGORY_CONNECTION, "invalid peer pubkey hex for client %s", client->name);
client = client->next; continue;
}
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "Client %s session_id=%08x", client->name, etcp_conn->session_id);
uint64_t node_id = sc_derive_node_id_from_pubkey(pubkey_bin);
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "client %s node_id=0x%016llx", client->name, (unsigned long long)node_id);
// Initialize crypto context for this connection
if (sc_init_ctx(&etcp_conn->crypto_ctx, &instance->my_keys) != SC_OK) {
DEBUG_ERROR(DEBUG_CATEGORY_CRYPTO, "failed to initialize crypto context for client %s", client->name);
etcp_connection_close(etcp_conn);
client = client->next;
struct NODE_CONN_DIRECT* handle = NULL;
struct ETCP_CONN* conn = NULL;
for (struct CFG_CLIENT_LINK* cl = client->links; cl; cl = cl->next) {
if (cl->local_srv && cl->local_srv->transport) {
DEBUG_WARN(DEBUG_CATEGORY_ETCP, "client %s TCP transport not yet supported via NCD, skipping", client->name);
continue;
}
// If client has peer public key configured, set it
if (strlen(client->peer_public_key_hex) > 0) {
// For now, set peer node ID to indicate we have peer key
// The actual peer key will be exchanged during connection establishment
etcp_conn->peer_node_id = 1; // Simple indicator
etcp_update_log_name(etcp_conn); // Update log_name with peer_node_id
DEBUG_INFO(DEBUG_CATEGORY_CRYPTO, "setting peer public key for client %s", client->name);
// Set peer public key (assuming hex format)
if (sc_set_peer_public_key(&etcp_conn->crypto_ctx, (const uint8_t*)client->peer_public_key_hex, 1) != SC_OK) {
DEBUG_ERROR(DEBUG_CATEGORY_CRYPTO, "failed to set peer public key for client %s", client->name);
} else {
DEBUG_INFO(DEBUG_CATEGORY_CRYPTO, "successfully set peer public key for client %s", client->name);
}
} else {
DEBUG_WARN(DEBUG_CATEGORY_CONFIG, "no peer public key configured for client %s", client->name);
}
etcp_set_routing_exchange_state(etcp_conn, 1); // инициируем обмен маршрутами
// Create links for this client
struct CFG_CLIENT_LINK* client_link = client->links;
while (client_link) {
// Find the local server for this link
struct CFG_SERVER* local_server = client_link->local_srv;
if (!local_server) {
client_link = client_link->next;
struct ETCP_SOCKET* sock = NULL;
for (struct ETCP_SOCKET* s = instance->etcp_sockets; s; s = s->next)
if (cl->local_srv && strcmp(cl->local_srv->name, s->name) == 0) { sock = s; break; }
if (!sock) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "no socket for server '%s' client %s link",
cl->local_srv ? cl->local_srv->name : "?", client->name);
continue;
}
// Find the socket for this server
struct ETCP_SOCKET* e_sock = NULL;
struct ETCP_SOCKET* sock = instance->etcp_sockets;
while (sock) {
if (sock->local_addr.ss_family == local_server->ip.ss_family) {
if (sock->local_addr.ss_family == AF_INET) {
struct sockaddr_in* sock_addr = (struct sockaddr_in*)&sock->local_addr;
struct sockaddr_in* srv_addr = (struct sockaddr_in*)&local_server->ip;
if (sock_addr->sin_addr.s_addr == srv_addr->sin_addr.s_addr &&
sock_addr->sin_port == srv_addr->sin_port) {
e_sock = sock;
if (!handle) {
struct TOPO_ADDR4 v4_addr; struct TOPO_ADDR6 v6_addr;
struct TOPO_NODE ni_tmp; memset(&ni_tmp, 0, sizeof(ni_tmp));
ni_tmp.node_id = node_id; ni_tmp.node_name = client->name;
memcpy(ni_tmp.public_key, pubkey_bin, SC_PUBKEY_SIZE);
if (cl->remote_addr.ss_family == AF_INET) {
struct sockaddr_in* sin = (struct sockaddr_in*)&cl->remote_addr;
v4_addr = (struct TOPO_ADDR4){0}; memcpy(v4_addr.addr, &sin->sin_addr.s_addr, 4);
v4_addr.port = ntohs(sin->sin_port); v4_addr.type = TOPO_ADDR_INTERFACE; v4_addr.protocol = TOPO_PROTO_UDP;
ni_tmp.v4_addrs = &v4_addr;
} else if (cl->remote_addr.ss_family == AF_INET6) {
struct sockaddr_in6* sin6 = (struct sockaddr_in6*)&cl->remote_addr;
v6_addr = (struct TOPO_ADDR6){0}; memcpy(v6_addr.addr, &sin6->sin6_addr, 16);
v6_addr.port = ntohs(sin6->sin6_port); v6_addr.type = TOPO_ADDR_INTERFACE; v6_addr.protocol = TOPO_PROTO_UDP;
ni_tmp.v6_addrs = &v6_addr;
}
int r = node_conn_direct_open_node(instance, node_id, NULL, NULL, &handle, &ni_tmp, sock);
if (r == NCD_ERR || !handle) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "ncd open failed for client %s", client->name);
break;
}
} else if (sock->local_addr.ss_family == AF_INET6) {
struct sockaddr_in6* sock_addr6 = (struct sockaddr_in6*)&sock->local_addr;
struct sockaddr_in6* srv_addr6 = (struct sockaddr_in6*)&local_server->ip;
if (memcmp(&sock_addr6->sin6_addr, &srv_addr6->sin6_addr, 16) == 0 &&
sock_addr6->sin6_port == srv_addr6->sin6_port) {
e_sock = sock;
break;
}
}
}
sock = sock->next;
}
if (local_server->transport) {
if (strlen(client->peer_public_key_hex) == 0) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "TCP client %s has no peer key", client->name);
client_link = client_link->next; continue;
}
// TCP transport — use stcp_link instead of etcp_link_new
uint16_t rport = ntohs(((struct sockaddr_in*)&client_link->remote_addr)->sin_port);
struct stcp_link_config scfg = {
.ua = instance->ua, .my_keys = &instance->my_keys, .inst = instance,
.peer_pubkey = (const uint8_t*)client->peer_public_key_hex,
.peer_pubkey_mode = 1, // hex
.remote_addr = &client_link->remote_addr, .remote_port = rport
};
struct stcp_link *slink = stcp_link_connect(&scfg);
if (!slink) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Failed to create TCP link for client %s", client->name);
client_link = client_link->next; continue;
}
etcp_conn->transport_link = slink;
DEBUG_INFO(DEBUG_CATEGORY_ETCP, "TCP link created for client %s", client->name);
client_link = client_link->next; continue;
}
if (!e_sock) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "No socket found for client %s link", client->name);
client_link = client_link->next;
continue;
conn = node_conn_direct_get_conn(handle);
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "client %s ncd handle=%p conn=%p %s sock=%s",
client->name, handle, conn, r == NCD_NEW ? "NEW" : "REUSED", sock->name);
} else {
etcp_link_new(conn, sock, &cl->remote_addr, 0);
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "client %s added link sock=%s", client->name, sock->name);
}
// Create link for this client connection
struct ETCP_LINK* link = etcp_link_new(etcp_conn, e_sock, &client_link->remote_addr, 0); // 0 = client initiates
if (!link) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "Failed to create link for client %s", client->name);
client_link = client_link->next;
continue;
}
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "Created link %p for client %s, socket=%p",
link, client->name, e_sock);
client_link = client_link->next;
if (handle) {
struct CONFIG_CONN_HANDLE* ch = u_calloc(1, sizeof(*ch));
if (ch) { ch->node_id = node_id; strncpy(ch->name, client->name, MAX_CONN_NAME_LEN - 1);
ch->handle = handle; ch->next = instance->config_conn_handles;
instance->config_conn_handles = ch;
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "client %s saved handle to config_conn_handles", client->name); }
}
client = client->next;

127
src/transport_layer/node_conn_direct.c
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@ -55,26 +55,28 @@ struct NODE_CONN_DIRECT {
struct NODE_CONN_DIRECT* next;
};
static struct ncd_entry* g_ncd_registry;
static uint8_t g_ncd_control_bound; /* 1 = etcp_bind(ETCP_RT_ID_NCD_CONTROL) уже сделан */
/* ─── forward declarations ─── */
static void ncd_event_dispatch(struct ncd_entry* entry, enum ncd_event event);
static void ncd_connect_timeout_cb(void* arg);
static void ncd_deliver_up_cb(void* arg);
static void ncd_init_cb(struct ETCP_CONN* conn, int event, void* arg);
static void ncd_up_cb(struct ETCP_CONN* conn, int event, void* arg);
static void ncd_down_cb(struct ETCP_CONN* conn, int event, void* arg);
static void ncd_deferred_close(void* arg);
static void ncd_deferred_close_conn(void* arg);
/* ═══════════ реестр ═══════════ */
static struct ncd_entry* ncd_registry_find(uint64_t node_id) {
struct ncd_entry* e = g_ncd_registry;
static struct ncd_entry* ncd_registry_find(struct UTUN_INSTANCE* inst, uint64_t node_id) {
struct ncd_entry* e = (struct ncd_entry*)inst->ncd_registry;
while (e) { if (e->node_id == node_id) return e; e = e->next; }
return NULL;
}
static void ncd_registry_add(struct ncd_entry* entry) {
entry->next = g_ncd_registry; g_ncd_registry = entry;
static void ncd_registry_add(struct UTUN_INSTANCE* inst, struct ncd_entry* entry) {
entry->next = (struct ncd_entry*)inst->ncd_registry; inst->ncd_registry = entry;
}
static void ncd_registry_remove(struct ncd_entry* entry) {
struct ncd_entry** pp = &g_ncd_registry;
static void ncd_registry_remove(struct UTUN_INSTANCE* inst, struct ncd_entry* entry) {
struct ncd_entry** pp = (struct ncd_entry**)&inst->ncd_registry;
while (*pp) { if (*pp == entry) { *pp = entry->next; return; } pp = &(*pp)->next; }
}
@ -98,7 +100,8 @@ static struct TOPO_NODE* ncd_lookup_node(struct UTUN_INSTANCE* inst, uint64_t no
/* ═══════════ создание линков (round‑robin, все сокеты кроме PRIVATE) ═══════════ */
static int ncd_create_links(struct ncd_entry* entry, struct TOPO_NODE* ni) {
static int ncd_create_links(struct ncd_entry* entry, struct TOPO_NODE* ni,
struct ETCP_SOCKET* specific_sock) {
struct ETCP_CONN* conn = entry->conn;
struct UTUN_INSTANCE* inst = conn->instance;
int link_count = 0;
@ -106,9 +109,14 @@ static int ncd_create_links(struct ncd_entry* entry, struct TOPO_NODE* ni) {
/* ---- IPv4 ---- */
{
struct ETCP_SOCKET* socks[64]; int sock_count = 0;
if (specific_sock) {
if (specific_sock->local_addr.ss_family == AF_INET)
socks[sock_count++] = specific_sock;
} else {
for (struct ETCP_SOCKET* s = inst->etcp_sockets; s; s = s->next)
if (s->local_addr.ss_family == AF_INET && s->type != CFG_SERVER_TYPE_PRIVATE)
socks[sock_count++] = s;
}
if (sock_count > 0) {
int rr = 0;
@ -127,9 +135,14 @@ static int ncd_create_links(struct ncd_entry* entry, struct TOPO_NODE* ni) {
/* ---- IPv6 ---- */
{
struct ETCP_SOCKET* socks[64]; int sock_count = 0;
if (specific_sock) {
if (specific_sock->local_addr.ss_family == AF_INET6)
socks[sock_count++] = specific_sock;
} else {
for (struct ETCP_SOCKET* s = inst->etcp_sockets; s; s = s->next)
if (s->local_addr.ss_family == AF_INET6 && s->type != CFG_SERVER_TYPE_PRIVATE)
socks[sock_count++] = s;
}
if (sock_count > 0) {
int rr = 0;
@ -186,19 +199,32 @@ static void ncd_up_cb(struct ETCP_CONN* conn, int event, void* arg) { (void)even
if (!entry || conn->fin_wait) return;
ncd_event_dispatch(entry, NCD_EVENT_UP);
}
static void ncd_deferred_close(void* arg) {
struct ncd_entry* entry = (struct ncd_entry*)arg;
struct ETCP_CONN* conn = entry->conn;
if (conn) {
etcp_conn_remove_cbk(conn, ncd_init_cb, entry);
etcp_conn_remove_cbk(conn, ncd_up_cb, entry);
etcp_conn_remove_cbk(conn, ncd_down_cb, entry);
ncd_registry_remove(conn->instance, entry);
etcp_connection_close(conn);
}
u_free(entry);
}
static void ncd_deferred_close_conn(void* arg) {
struct ETCP_CONN* conn = (struct ETCP_CONN*)arg;
if (conn) etcp_connection_close(conn);
}
static void ncd_down_cb(struct ETCP_CONN* conn, int event, void* arg) { (void)event;
struct ncd_entry* entry = (struct ncd_entry*)arg;
if (!entry) return;
DEBUG_DEBUG(DEBUG_CATEGORY_DEBUG, "[ncd-debug] ncd_down_cb conn=%p entry=%p fin_wait=%d handle_count=%d node=0x%016llx",
(void*)conn, entry, conn->fin_wait, entry->handle_count, (unsigned long long)entry->node_id);
if (conn->fin_wait && entry->handle_count <= 0) {
DEBUG_INFO(DEBUG_CATEGORY_NCD, "[ncd] DOWN during fin_wait, cleaning up node=0x%016llx", (unsigned long long)entry->node_id);
conn->fin_wait = 0; conn->fin_wait_clear_cb = NULL; conn->fin_wait_clear_arg = NULL;
if (entry->fin_wait_timer) { uasync_cancel_timeout(entry->ua, entry->fin_wait_timer); entry->fin_wait_timer = NULL; }
etcp_conn_remove_cbk(conn, ncd_init_cb, entry);
etcp_conn_remove_cbk(conn, ncd_up_cb, entry);
etcp_conn_remove_cbk(conn, ncd_down_cb, entry);
etcp_connection_close(conn);
ncd_registry_remove(entry);
u_free(entry);
uasync_call_soon(entry->ua, entry, ncd_deferred_close);
return;
}
ncd_event_dispatch(entry, NCD_EVENT_DOWN);
@ -241,7 +267,7 @@ static void ncd_fin_wait_timeout_cb(void* arg) {
etcp_conn_remove_cbk(entry->conn, ncd_up_cb, entry);
etcp_conn_remove_cbk(entry->conn, ncd_down_cb, entry);
etcp_connection_close(entry->conn);
ncd_registry_remove(entry);
ncd_registry_remove(entry->conn->instance, entry);
u_free(entry);
}
@ -254,14 +280,14 @@ static void ncd_recv_control_handler(struct ETCP_CONN* conn, struct ll_entry* e)
}
struct ncd_control_msg* msg = (struct ncd_control_msg*)e->dgram;
uint64_t sender_id = msg->node_id;
struct ncd_entry* entry = ncd_registry_find(sender_id);
struct ncd_entry* entry = ncd_registry_find(conn->instance, sender_id);
switch (msg->subcmd) {
case NCD_SUBCMD_CLOSE:
DEBUG_INFO(DEBUG_CATEGORY_NCD, "[ncd] recv CLOSE from 0x%016llx", (unsigned long long)sender_id);
if (!entry) {
DEBUG_INFO(DEBUG_CATEGORY_NCD, "[ncd] no entry for CLOSE sender 0x%016llx, closing conn", (unsigned long long)sender_id);
if (conn) etcp_connection_close(conn);
DEBUG_INFO(DEBUG_CATEGORY_NCD, "[ncd] no entry for CLOSE sender 0x%016llx, deferred close conn", (unsigned long long)sender_id);
if (conn) uasync_call_soon(conn->instance->ua, conn, ncd_deferred_close_conn);
break;
}
if (entry->handle_count > 0) {
@ -274,8 +300,8 @@ static void ncd_recv_control_handler(struct ETCP_CONN* conn, struct ll_entry* e)
etcp_send(conn, qe); }
}
} else {
DEBUG_INFO(DEBUG_CATEGORY_NCD, "[ncd] closing conn for CLOSE from 0x%016llx", (unsigned long long)sender_id);
if (conn) etcp_connection_close(conn);
DEBUG_INFO(DEBUG_CATEGORY_NCD, "[ncd] deferred close conn for CLOSE from 0x%016llx", (unsigned long long)sender_id);
if (conn) uasync_call_soon(conn->instance->ua, conn, ncd_deferred_close_conn);
}
break;
case NCD_SUBCMD_KEEP_ALIVE:
@ -283,8 +309,14 @@ static void ncd_recv_control_handler(struct ETCP_CONN* conn, struct ll_entry* e)
if (entry && entry->conn->fin_wait) {
entry->conn->fin_wait = 0; entry->conn->fin_wait_clear_cb = NULL; entry->conn->fin_wait_clear_arg = NULL;
if (entry->fin_wait_timer) { uasync_cancel_timeout(entry->ua, entry->fin_wait_timer); entry->fin_wait_timer = NULL; }
if (entry->handle_count <= 0) {
entry->conn->fin_wait = 1;
entry->fin_wait_timer = uasync_set_timeout(entry->ua, NCD_FIN_WAIT_TIMEOUT_TB, entry, ncd_fin_wait_timeout_cb, "ncd_fin_wait");
DEBUG_INFO(DEBUG_CATEGORY_NCD, "[ncd] KEEP_ALIVE but no handles, restart fin_wait");
} else {
DEBUG_INFO(DEBUG_CATEGORY_NCD, "[ncd] KEEP_ALIVE: fin_wait cleared, conn stays alive");
}
}
break;
}
queue_dgram_free(e); queue_entry_free(e);
@ -293,9 +325,9 @@ static void ncd_recv_control_handler(struct ETCP_CONN* conn, struct ll_entry* e)
/* ═══════════ инициализация глобального обработчика ═══════════ */
static void ncd_init_control_binding(struct UTUN_INSTANCE* inst) {
if (g_ncd_control_bound) return;
if (inst->ncd_control_bound) return;
etcp_bind(inst, ETCP_RT_ID_NCD_CONTROL, ncd_recv_control_handler);
g_ncd_control_bound = 1;
inst->ncd_control_bound = 1;
DEBUG_INFO(DEBUG_CATEGORY_NCD, "[ncd] bound ETCP_RT_ID_NCD_CONTROL handler");
}
@ -303,13 +335,14 @@ static void ncd_init_control_binding(struct UTUN_INSTANCE* inst) {
int node_conn_direct_open(struct UTUN_INSTANCE* inst, uint64_t node_id,
ncd_callback cb, void* cb_arg,
struct NODE_CONN_DIRECT** out_handle) {
struct NODE_CONN_DIRECT** out_handle,
struct ETCP_SOCKET* specific_sock) {
if (!inst || !out_handle) return NCD_ERR;
*out_handle = NULL;
ncd_init_control_binding(inst);
/* 1. Ищем в реестре — conn уже есть */
struct ncd_entry* entry = ncd_registry_find(node_id);
struct ncd_entry* entry = ncd_registry_find(inst, node_id);
if (entry) {
/* снять fin_wait если был */
if (entry->conn && entry->conn->fin_wait) {
@ -344,11 +377,11 @@ int node_conn_direct_open(struct UTUN_INSTANCE* inst, uint64_t node_id,
if (!entry) { DEBUG_ERROR(DEBUG_CATEGORY_NCD, "[ncd] alloc entry failed node=0x%016llx", (unsigned long long)node_id); return NCD_ERR; }
entry->node_id = node_id; entry->conn = conn; entry->ua = inst->ua;
entry->up = (uint8_t)(conn->links_up ? 1 : 0);
ncd_registry_add(entry);
ncd_registry_add(inst, entry);
struct NODE_CONN_DIRECT* h = u_calloc(1, sizeof(*h));
if (!h) { DEBUG_ERROR(DEBUG_CATEGORY_NCD, "[ncd] alloc handle failed node=0x%016llx", (unsigned long long)node_id);
ncd_registry_remove(entry); u_free(entry); return NCD_ERR; }
ncd_registry_remove(inst, entry); u_free(entry); return NCD_ERR; }
h->entry = entry; h->cb = cb; h->cb_arg = cb_arg;
h->next = entry->handles; entry->handles = h;
entry->handle_count = 1;
@ -375,7 +408,11 @@ int node_conn_direct_open(struct UTUN_INSTANCE* inst, uint64_t node_id,
return NCD_ERR;
}
conn = etcp_connection_create(inst, NULL);
{ char conn_name[MAX_CONN_NAME_LEN];
if (ni->node_name && ni->node_name[0]) strncpy(conn_name, ni->node_name, MAX_CONN_NAME_LEN - 1);
else snprintf(conn_name, sizeof(conn_name), "n_%016llx", (unsigned long long)node_id);
conn = etcp_connection_create(inst, conn_name); }
if (!conn) {
DEBUG_ERROR(DEBUG_CATEGORY_NCD, "[ncd] etcp_connection_create failed node=0x%016llx", (unsigned long long)node_id);
topo_node_registry_unref(inst->topo_groups, ni->node_id);
@ -411,11 +448,11 @@ int node_conn_direct_open(struct UTUN_INSTANCE* inst, uint64_t node_id,
etcp_connection_close(conn); topo_node_registry_unref(inst->topo_groups, ni->node_id); return NCD_ERR;
}
entry->node_id = node_id; entry->conn = conn; entry->ua = inst->ua; entry->up = 0;
ncd_registry_add(entry);
ncd_registry_add(inst, entry);
struct NODE_CONN_DIRECT* h = u_calloc(1, sizeof(*h));
if (!h) { DEBUG_ERROR(DEBUG_CATEGORY_NCD, "[ncd] alloc handle failed node=0x%016llx", (unsigned long long)node_id);
ncd_registry_remove(entry); u_free(entry); etcp_connection_close(conn); topo_node_registry_unref(inst->topo_groups, ni->node_id); return NCD_ERR; }
ncd_registry_remove(inst, entry); u_free(entry); etcp_connection_close(conn); topo_node_registry_unref(inst->topo_groups, ni->node_id); return NCD_ERR; }
h->entry = entry; h->cb = cb; h->cb_arg = cb_arg;
h->next = entry->handles; entry->handles = h;
entry->handle_count = 1;
@ -425,7 +462,7 @@ int node_conn_direct_open(struct UTUN_INSTANCE* inst, uint64_t node_id,
etcp_conn_add_cbk(conn, ncd_up_cb, entry, ETCP_CBK_EVENT_UP);
etcp_conn_add_cbk(conn, ncd_down_cb, entry, ETCP_CBK_EVENT_DOWN);
int link_count = ncd_create_links(entry, ni);
int link_count = ncd_create_links(entry, ni, specific_sock);
if (link_count == 0)
DEBUG_WARN(DEBUG_CATEGORY_NCD, "[ncd] no links created for node=0x%016llx", (unsigned long long)node_id);
@ -440,13 +477,14 @@ int node_conn_direct_open(struct UTUN_INSTANCE* inst, uint64_t node_id,
int node_conn_direct_open_node(struct UTUN_INSTANCE* inst, uint64_t node_id,
ncd_callback cb, void* cb_arg,
struct NODE_CONN_DIRECT** out_handle,
struct TOPO_NODE* ni) {
struct TOPO_NODE* ni,
struct ETCP_SOCKET* specific_sock) {
if (!inst || !out_handle || !ni) return NCD_ERR;
*out_handle = NULL;
ncd_init_control_binding(inst);
/* 1. Ищем в реестре — conn уже есть */
{ struct ncd_entry* entry = ncd_registry_find(node_id);
{ struct ncd_entry* entry = ncd_registry_find(inst, node_id);
if (entry) {
if (entry->conn && entry->conn->fin_wait) {
DEBUG_INFO(DEBUG_CATEGORY_NCD, "[ncd] open_node REUSED clearing fin_wait node=0x%016llx", (unsigned long long)node_id);
@ -479,11 +517,11 @@ int node_conn_direct_open_node(struct UTUN_INSTANCE* inst, uint64_t node_id,
if (!entry) { DEBUG_ERROR(DEBUG_CATEGORY_NCD, "[ncd] open_node alloc entry failed node=0x%016llx", (unsigned long long)node_id); return NCD_ERR; }
entry->node_id = node_id; entry->conn = conn; entry->ua = inst->ua;
entry->up = (uint8_t)(conn->links_up ? 1 : 0);
ncd_registry_add(entry);
ncd_registry_add(inst, entry);
struct NODE_CONN_DIRECT* h = u_calloc(1, sizeof(*h));
if (!h) { DEBUG_ERROR(DEBUG_CATEGORY_NCD, "[ncd] open_node alloc handle failed node=0x%016llx", (unsigned long long)node_id);
ncd_registry_remove(entry); u_free(entry); return NCD_ERR; }
ncd_registry_remove(inst, entry); u_free(entry); return NCD_ERR; }
h->entry = entry; h->cb = cb; h->cb_arg = cb_arg;
h->next = entry->handles; entry->handles = h;
entry->handle_count = 1;
@ -504,7 +542,10 @@ int node_conn_direct_open_node(struct UTUN_INSTANCE* inst, uint64_t node_id,
}}
/* 3. Новое подключение — используем переданный ni (временный, не владеем) */
{ struct ETCP_CONN* conn = etcp_connection_create(inst, NULL);
{ char conn_name[MAX_CONN_NAME_LEN];
if (ni->node_name && ni->node_name[0]) strncpy(conn_name, ni->node_name, MAX_CONN_NAME_LEN - 1);
else snprintf(conn_name, sizeof(conn_name), "n_%016llx", (unsigned long long)node_id);
struct ETCP_CONN* conn = etcp_connection_create(inst, conn_name);
if (!conn) {
DEBUG_ERROR(DEBUG_CATEGORY_NCD, "[ncd] open_node etcp_connection_create failed node=0x%016llx", (unsigned long long)node_id);
return NCD_ERR;
@ -538,11 +579,11 @@ int node_conn_direct_open_node(struct UTUN_INSTANCE* inst, uint64_t node_id,
etcp_connection_close(conn); return NCD_ERR;
}
entry->node_id = node_id; entry->conn = conn; entry->ua = inst->ua; entry->up = 0;
ncd_registry_add(entry);
ncd_registry_add(inst, entry);
struct NODE_CONN_DIRECT* h = u_calloc(1, sizeof(*h));
if (!h) { DEBUG_ERROR(DEBUG_CATEGORY_NCD, "[ncd] open_node alloc handle failed node=0x%016llx", (unsigned long long)node_id);
ncd_registry_remove(entry); u_free(entry); etcp_connection_close(conn); return NCD_ERR; }
ncd_registry_remove(inst, entry); u_free(entry); etcp_connection_close(conn); return NCD_ERR; }
h->entry = entry; h->cb = cb; h->cb_arg = cb_arg;
h->next = entry->handles; entry->handles = h;
entry->handle_count = 1;
@ -552,7 +593,7 @@ int node_conn_direct_open_node(struct UTUN_INSTANCE* inst, uint64_t node_id,
etcp_conn_add_cbk(conn, ncd_up_cb, entry, ETCP_CBK_EVENT_UP);
etcp_conn_add_cbk(conn, ncd_down_cb, entry, ETCP_CBK_EVENT_DOWN);
int link_count = ncd_create_links(entry, ni);
int link_count = ncd_create_links(entry, ni, specific_sock);
if (link_count == 0)
DEBUG_WARN(DEBUG_CATEGORY_NCD, "[ncd] open_node no links created for node=0x%016llx", (unsigned long long)node_id);
@ -601,9 +642,11 @@ void node_conn_direct_close(struct NODE_CONN_DIRECT* h) {
etcp_conn_remove_cbk(conn, ncd_up_cb, entry);
etcp_conn_remove_cbk(conn, ncd_down_cb, entry);
etcp_connection_close(conn);
}
ncd_registry_remove(entry);
ncd_registry_remove(conn->instance, entry);
u_free(entry);
} else {
DEBUG_WARN(DEBUG_CATEGORY_NCD, "[ncd] close: no conn for entry, leaking entry=%p", entry);
}
}
}

105
src/utun_instance.c
Unescape View File

@ -18,6 +18,7 @@
#include "chat/chat_sync.h"
#include "stcp_server.h"
#include "control_server.h"
#include "transport_layer/node_conn_direct.h"
#include "../lib/u_async.h"
#include "../lib/debug_config.h"
@ -418,6 +419,17 @@ void utun_instance_destroy(struct UTUN_INSTANCE *instance) {
instance->control_srv = NULL;
}
// Close config-based connection handles (sends CLOSE before sockets die)
struct CONFIG_CONN_HANDLE* ch = instance->config_conn_handles;
while (ch) {
struct CONFIG_CONN_HANDLE* next = ch->next;
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "[INSTANCE_DESTROY] closing config handle for node=0x%016llx", (unsigned long long)ch->node_id);
node_conn_direct_close(ch->handle);
u_free(ch);
ch = next;
}
instance->config_conn_handles = NULL;
// Cleanup ETCP sockets and connections FIRST (before destroying uasync)
DEBUG_INFO(DEBUG_CATEGORY_MEMORY, "[INSTANCE_DESTROY] Cleaning up ETCP sockets and connections");
struct ETCP_SOCKET* sock = instance->etcp_sockets;
@ -857,67 +869,52 @@ struct UTUN_INSTANCE *utun_instance_reload(struct UTUN_INSTANCE *instance, struc
}
os = next;
}
// Clients [client:] and links (link=)
// Clients [client:] — close old config handles, rebuild from new config
struct CONFIG_CONN_HANDLE* ch = instance->config_conn_handles;
while (ch) { struct CONFIG_CONN_HANDLE* next = ch->next; node_conn_direct_close(ch->handle); u_free(ch); ch = next; }
instance->config_conn_handles = NULL;
for (struct CFG_CLIENT *nc = new_config->clients; nc; nc = nc->next) {
if (strlen(nc->peer_public_key_hex) == 0) { DEBUG_WARN(DEBUG_CATEGORY_CONFIG, "client %s no peer pubkey", nc->name); continue; }
uint8_t pubkey_bin[SC_PUBKEY_SIZE];
if (sc_hex_to_binary(nc->peer_public_key_hex, pubkey_bin, SC_PUBKEY_SIZE) != 0) { DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "invalid pubkey hex client %s", nc->name); continue; }
uint64_t node_id = sc_derive_node_id_from_pubkey(pubkey_bin);
struct NODE_CONN_DIRECT* handle = NULL;
struct ETCP_CONN* conn = NULL;
{
struct ll_entry* entry = instance->connections->head;
while (entry) {
struct conn_queue_entry* ce = (struct conn_queue_entry*)entry->data;
if (strcmp(nc->name, ce->conn->name) == 0) { conn = ce->conn; break; }
entry = entry->next;
}
}
if (!conn) {
conn = etcp_connection_create(instance, nc->name);
if (conn) {
sc_set_peer_public_key(&conn->crypto_ctx, (const uint8_t*)nc->peer_public_key_hex, 1);
if (random_bytes((uint8_t*)&conn->session_id, sizeof(conn->session_id)) != 0) {
DEBUG_ERROR(DEBUG_CATEGORY_CRYPTO, "Failed to generate session_id for client %s", nc->name);
conn->session_id = 0;
}
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "Added new client %s session_id=%08x", nc->name, conn->session_id);
}
}
// links
for (struct CFG_CLIENT_LINK *nl = nc->links; nl; nl = nl->next) {
struct ETCP_LINK *link = NULL;
for (struct ETCP_LINK *l = conn->links; l; l = l->next) {
if (local_sockaddr_equal(&nl->remote_addr, &l->remote_addr)) {
link = l; break;
}
}
if (link) {
// in-place for unchanged link (no tear)
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "Link for %s unchanged - untouched", nc->name);
continue;
}
struct ETCP_SOCKET* sock = NULL;
for (struct ETCP_SOCKET *s = instance->etcp_sockets; s; s = s->next) {
if (strcmp(nl->server_name, s->name) == 0) {
sock = s; break;
}
}
if (sock) {
for (struct ETCP_SOCKET* s = instance->etcp_sockets; s; s = s->next)
if (nl->local_srv && strcmp(nl->local_srv->name, s->name) == 0) { sock = s; break; }
if (!sock) { DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "no socket for server '%s' client %s", nl->local_srv ? nl->local_srv->name : "?", nc->name); continue; }
if (!handle) {
struct TOPO_ADDR4 v4_addr; struct TOPO_ADDR6 v6_addr;
struct TOPO_NODE ni_tmp; memset(&ni_tmp, 0, sizeof(ni_tmp));
ni_tmp.node_id = node_id; ni_tmp.node_name = nc->name;
memcpy(ni_tmp.public_key, pubkey_bin, SC_PUBKEY_SIZE);
if (nl->remote_addr.ss_family == AF_INET) {
struct sockaddr_in* sin = (struct sockaddr_in*)&nl->remote_addr;
v4_addr = (struct TOPO_ADDR4){0}; memcpy(v4_addr.addr, &sin->sin_addr.s_addr, 4);
v4_addr.port = ntohs(sin->sin_port); v4_addr.type = TOPO_ADDR_INTERFACE; v4_addr.protocol = TOPO_PROTO_UDP;
ni_tmp.v4_addrs = &v4_addr;
} else if (nl->remote_addr.ss_family == AF_INET6) {
struct sockaddr_in6* sin6 = (struct sockaddr_in6*)&nl->remote_addr;
v6_addr = (struct TOPO_ADDR6){0}; memcpy(v6_addr.addr, &sin6->sin6_addr, 16);
v6_addr.port = ntohs(sin6->sin6_port); v6_addr.type = TOPO_ADDR_INTERFACE; v6_addr.protocol = TOPO_PROTO_UDP;
ni_tmp.v6_addrs = &v6_addr;
}
int rc = node_conn_direct_open_node(instance, node_id, NULL, NULL, &handle, &ni_tmp, sock);
if (rc == NCD_ERR || !handle) { DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "ncd reload open failed client %s", nc->name); break; }
conn = node_conn_direct_get_conn(handle);
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "reload: client %s ncd %s node=0x%016llx", nc->name, rc == NCD_NEW ? "NEW" : "REUSED", (unsigned long long)node_id);
} else {
etcp_link_new(conn, sock, &nl->remote_addr, 0);
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "Added new link for %s", nc->name);
}
}
// remove deleted links (safe with next)
struct ETCP_LINK *l = conn->links;
while (l) {
struct ETCP_LINK *next_l = l->next;
int found = 0;
for (struct CFG_CLIENT_LINK *nl = nc->links; nl; nl = nl->next) {
if (local_sockaddr_equal(&nl->remote_addr, &l->remote_addr)) {
found = 1; break;
}
}
if (!found) {
etcp_link_close(l);
DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "Removed deleted link for %s", nc->name);
}
l = next_l;
if (handle) {
ch = u_calloc(1, sizeof(*ch));
if (ch) { ch->node_id = node_id; strncpy(ch->name, nc->name, MAX_CONN_NAME_LEN - 1);
ch->handle = handle; ch->next = instance->config_conn_handles; instance->config_conn_handles = ch; }
}
}
// Reload networks: clear and repopulate

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